MalwareEducationEducationRansomwareData EncryptedTargetedIdentity (basic)LowContained

The Episcopal School of Dallas

bd_18336b1f6563e579 · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 18, 2023

Filed

Aug 30, 2023

To disclose

24 weeks

Affected

Not disclosed

Linked

3 filings

Confidence

65%

Full breach record for The Episcopal School of Dallas →

The Episcopal School of Dallas reported a cybersecurity incident on March 18, 2023, involving unauthorized access and malware deployment. The attacker may have accessed limited information (names) of employees, students, and community members between March 16-18, 2023. The school engaged outside investigators and federal law enforcement, and offered credit monitoring via Experian.

J jump to incidentP pin to compareR raw source

Vermont clock✗ VT AG >45 bday24 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 2 days

discovery → filing · 24 weeks / 165 days

Mar 16, 2023

Begins

Mar 18, 2023

Discovered

Aug 30, 2023

Filed

vs. sector median

+17 wks slower

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_cccb4cad91b338482023-08-30Verified
New Hampshire State AGbd_c9b61f38fce2e6562023-08-31 · +1dVerified

Name: The Episcopal School of Dallas
norm: the episcopal school of dallas

Name: The Episcopal School of Dallas
norm: the episcopal school of dallas
Industry: Educationllm

Discovered: Mar 18, 2023
Breach occurred: Mar 16, 2023 – Mar 18, 2023
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 30, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Launched an investigation with outside assistance
Prompt and continued correspondence with federal law enforcement authorities
Providing you with ## months of complimentary access to credit monitoring and identity restoration services through Experian
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(165 days from discovery to filing)
Compliance flags: VT AG >45 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGAug 30 · first

Vermont State AGAug 30 · first · this page

New Hampshire State AG+1d

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://ago.vermont.gov/document/2023-08-30-episcopal-school-dallas-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 30, 2023
Raw hash: dfb51859e84cb74d6da34f36826548d05b50a85c12232f214755a3c2854e9dd6

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityThe Episcopal School of Dallas

Victim entityThe Episcopal School of Dallas

Incidentdiscovered Mar 18, 2023

Stated responseLaunched an investigation with outside assistance

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov